diff --git a/rtmp/rtmp.go b/rtmp/rtmp.go
index 09e42479..9c8e097e 100644
--- a/rtmp/rtmp.go
+++ b/rtmp/rtmp.go
@@ -1422,11 +1422,8 @@ func C_RTMP_ReadPacket(r *C_RTMP, packet *C_RTMPPacket) (ok bool) {
 
 	if packet.m_chunk != nil {
 		packet.m_chunk.c_headerSize = hSize
-		memmove(unsafe.Pointer(&packet.m_chunk.c_header[0]), unsafe.Pointer(&hbuf[0]),
-			uintptr(hSize))
-		packet.m_chunk.c_chunk = (*byte)(incBytePtr(unsafe.Pointer(packet.m_body),
-			int(packet.m_nBytesRead)))
-		packet.m_chunk.c_chunkSize = nChunk
+		copy(packet.m_chunk.c_header[:], hbuf[:hSize])
+		packet.m_chunk.c_chunk = (*[_Gi]byte)(unsafe.Pointer(packet.m_body))[packet.m_nBytesRead : packet.m_nBytesRead+uint32(nChunk)]
 	}
 
 	if C_ReadN(r, (*byte)(incBytePtr(unsafe.Pointer(packet.m_body), int(packet.m_nBytesRead))),
diff --git a/rtmp/rtmp_headers.go b/rtmp/rtmp_headers.go
index 96aa2235..3fc0ac62 100644
--- a/rtmp/rtmp_headers.go
+++ b/rtmp/rtmp_headers.go
@@ -114,8 +114,7 @@ const (
 // rtmp.h +105
 type C_RTMPChunk struct {
 	c_headerSize int32
-	c_chunkSize  int32
-	c_chunk      *byte
+	c_chunk      []byte
 	c_header     [RTMP_MAX_HEADER_SIZE]byte
 }